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Related Experiment Video

Updated: Jul 8, 2025

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

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On Kinetic Constraints That Catalysis Imposes on Elementary Processes.

Yann Sakref¹, Maitane Muñoz-Basagoiti^1,2, Zorana Zeravcic¹

¹Gulliver UMR CNRS 7083, ESPCI Paris, Université PSL, 75005 Paris, France.

The Journal of Physical Chemistry. B

|December 13, 2023

Summary

Catalysis involves multiple steps, not just the chemical reaction. Understanding intrinsic and extrinsic factors is key to optimizing the entire catalytic cycle for efficient product formation.

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Area of Science:

Chemical Engineering
Physical Chemistry
Reaction Kinetics

Background:

Catalysis accelerates product formation through a series of elementary processes.
Catalyst design often focuses narrowly on chemical steps, overlooking the global nature of the catalytic cycle.
Both intrinsic (composition, shape) and extrinsic (concentration) parameters influence catalysis.

Purpose of the Study:

To examine the conditions catalysis imposes on reaction cycle steps.
To clarify the roles of intrinsic and extrinsic parameters in catalysis.
To provide a framework for analyzing complex catalytic systems.

Main Methods:

Utilized a first-passage time approach to analyze reaction cycles.
Examined various decompositions of catalytic cycles, including non-Markovian cases.
Applied the method to diverse reaction types.

Main Results:

Demonstrated that catalysis is a global property influenced by all steps in a cycle.
Quantified the impact of intrinsic and extrinsic parameters on catalytic efficiency.
Showcased the utility of first-passage times for analyzing unknown intermediate states.

Conclusions:

Catalysis depends on the interplay between intrinsic and extrinsic factors across the entire catalytic cycle.
The first-passage time approach offers a robust method for understanding catalytic mechanisms.
Optimizing catalysis requires considering all elementary steps and their dependencies on system parameters.